3O设置CPU为性能模式(C2338设置主频2100MHz)

恋花

以下是Centos7 的代码,其他系统自行搜索测试

1. # yum install -y cpupowerutils;
   
2. # cpupower frequency-info
   
3. # cat /proc/cpuinfo
   
4. 
   
5. cpupower frequency-set -g performance

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效果

mzh

Debian

1. apt install cpufrequtils

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1. 编辑 /etc/default/cpufrequtils 如不存在则创建，

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1. 添加 GOVERNOR="performance"

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1. systemctl restart cpufrequtils

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之前：

1. cpufrequtils 008: cpufreq-info (C) Dominik Brodowski 2004-2009
   
2. Report errors and bugs to [email protected], please.
   
3. analyzing CPU 0:
   
4.   driver: acpi-cpufreq
   
5.   CPUs which run at the same hardware frequency: 0
   
6.   CPUs which need to have their frequency coordinated by software: 0
   
7.   maximum transition latency: 10.0 us.
   
8.   hardware limits: 1.40 GHz - 2.10 GHz
   
9.   available frequency steps: 2.10 GHz, 1.80 GHz, 1.60 GHz, 1.40 GHz
   
10.   available cpufreq governors: conservative, ondemand, userspace, powersave, performance, schedutil
    
11.   current policy: frequency should be within 1.40 GHz and 2.10 GHz.
    
12.                   The governor "ondemand" may decide which speed to use
    
13.                   within this range.
    
14.   current CPU frequency is 1.40 GHz (asserted by call to hardware).
    
15.   cpufreq stats: 2.10 GHz:100.00%, 1.80 GHz:0.00%, 1.60 GHz:0.00%, 1.40 GHz:0.00%  (65)
    

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之后

1. analyzing CPU 0:
   
2.   driver: acpi-cpufreq
   
3.   CPUs which run at the same hardware frequency: 0
   
4.   CPUs which need to have their frequency coordinated by software: 0
   
5.   maximum transition latency: 10.0 us.
   
6.   hardware limits: 1.40 GHz - 2.10 GHz
   
7.   available frequency steps: 2.10 GHz, 1.80 GHz, 1.60 GHz, 1.40 GHz
   
8.   available cpufreq governors: conservative, ondemand, userspace, powersave, performance, schedutil
   
9.   current policy: frequency should be within 1.40 GHz and 2.10 GHz.
   
10.                   The governor "performance" may decide which speed to use
    
11.                   within this range.
    
12.   current CPU frequency is 2.10 GHz (asserted by call to hardware).
    
13.   cpufreq stats: 2.10 GHz:99.99%, 1.80 GHz:0.00%, 1.60 GHz:0.00%, 1.40 GHz:0.01%  (461)
    

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register

楼上一些人不了解呀

performance         运行于最大频率
powersave         运行于最小频率
userspace         运行于用户指定的频率
ondemand         按需快速动态调整CPU频率， 一有cpu计算量的任务，就会立即达到最大频率运行，空闲时间增加就降低频率
conservative         按需快速动态调整CPU频率， 比 ondemand 的调整更保守
schedutil         基于调度程序调整 CPU 频率

机子默认一般运行于ondemand模式，会有中断开销，睿频也是有开销的，特别是对于低端cpu。

调整到performance模式，就是一直以最大频率运行。

其实无需安装软件包，直接创建一个udev规则
/etc/udev/rules.d/50-scaling-governor.rules

SUBSYSTEM=="module", ACTION=="add", KERNEL=="acpi_cpufreq", RUN+=" /bin/sh -c ' \
        echo performance > /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor ' "

6700

没什么意义吧 自动睿频

Xhvai110

no or unknown cpufreq driver is active on this CPU
  CPUs which run at the same hardware frequency: Not Available
  CPUs which need to have their frequency coordinated by software: Not Available
  maximum transition latency:  Cannot determine or is not supported.
  hardware limits: Not Available
  available cpufreq governors: Not Available
  Unable to determine current policy
  current CPU frequency: Unable to call hardware
  current CPU frequency:  Unable to call to kernel
  boost state support:
    Supported: yes
    Active: yes

凤梨

不错不错，已经成功

掩耳盗铃

效果还是很明显的。谢谢啦

Xhvai110

Mark

geo

感谢

weiai

这种模式调整只适用于debian，上次在Let论坛看到的，部分系统，并不生效

木子喵

mark ~~~

寒夜方舟

通过对比试验确定，centos7如果使用一键脚本更换内核并更新后，它的最高频率只能是1750，可能是内核兼容性问题